... Gauge/Manometer SpecificationTemperature Gauge/Thermometer SpecificationSizes of Case:2"/50mm, 2.5"/63mm,3"/75mm ... case with chromed ringFluid filled:Glycerine,Silicon\Window:Polycarbonate, GlassPolycarbonate, GlassDial:AluminiumAluminiumDial Face:single, dual, w/Logosingle, dual, w/LogoPointer:Aluminium ... 4",3/8",1/2",BSP,NPT,G1/2…,M20*1.5,M8*1…1 ... 4",3/8",1/2",BSP,NPT,G1/2…,M20*1.5,M8*1…Accessories ...